import binascii
import secrets

def str_to_hex(s):
    return binascii.hexlify(s.encode('utf-8')).decode('utf-8')

def hex_to_str(h):
     return binascii.unhexlify(h.encode('utf-8')).decode('utf-8')

def xor_hex_str(hex1, hex2):
    bytes1 = bytes.fromhex(hex1)
    bytes2 = bytes.fromhex(hex2)
    xor_result = bytes(a ^ b for a, b in zip(bytes1, bytes2))
    return xor_result.hex()

def gen_random_key(l):
    random_bytes = secrets.token_bytes(l)
    return random_bytes

def encrypt_message(message):
    message_bytes = message.encode('utf-8')
    key = gen_random_key(len(message_bytes))
    cipher_bytes = bytes(a^b for a,b in zip(message_bytes, key))
    return cipher_bytes, key

def decrypt_message(cipher_bytes, key):
    decrypted_bytes = bytes(a^b for a,b in zip(cipher_bytes, key))
    return decrypted_bytes.decode('utf-8')

open_message = "С Новым Годом, друзья!"
encrypted_message, key = encrypt_message(open_message)
print("Зашифрованное сообщение:", encrypted_message.hex())
print("Ключ:                   ", key.hex())
decrypted_message = decrypt_message(encrypted_message, key)
print("Расшифрованное сообщение:", decrypted_message)